Frequency dependence of the two-photon absorption coefficient in InSb: tunneling effects
- 1 December 1987
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 4 (12), 1964-1969
- https://doi.org/10.1364/josab.4.001964
Abstract
The two-photon absorption coefficient β of InSb was carefully determined at 9.6 and 10.6 µm, using simultaneous self-induced refraction and transmission measurements of 45-psec CO2 laser pulses. It was found that the frequency dependence of β was quite different from a previous measurement using nanosecond laser pulses [A. M. Johnston, C. R. Pidgeon, and J. Dempsey, Phys. Rev. B 22, 825 (1980)]. The discrepancy is believed to be due to the uncertainty in the recombination and diffusion rates for the nanosecond experiments. The new results reported here are consistent with the theory of tunneling-assisted ionization in a narrow-band-gap semiconductor.Keywords
This publication has 33 references indexed in Scilit:
- Two-photon and three-photon absorption coefficients of InSbJournal of the Optical Society of America B, 1986
- Two Photon Absorption, Nonlinear Refraction, And Optical Limiting In SemiconductorsOptical Engineering, 1985
- Scaling rules for multiphoton interband absorption in semiconductorsJournal of the Optical Society of America B, 1984
- Optical bistability in InSb at room temperature with two-photon excitationApplied Physics Letters, 1983
- Difference-frequency variation of the free-carrier-induced, third-order nonlinear susceptibility in n-InSbApplied Physics Letters, 1982
- Nonparabolicity and exciton effects in two-photon absorption in zincblende semiconductorsSolid State Communications, 1981
- Frequency dependence of two-photon absorption in InSb andPhysical Review B, 1980
- Non-linear optical effects in InSb with a c.w. CO laserOptics Communications, 1978
- Nonlinear absorption in direct-gap semiconductorsApplied Optics, 1975
- Band structure of indium antimonideJournal of Physics and Chemistry of Solids, 1957